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nerves_runtime

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Small, general runtime utilities for Nerves devices

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nerves_runtime src erlcmd.h
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src/erlcmd.h 

/*

 *  Copyright 2014 Frank Hunleth

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 * Common Erlang->C port communications declarations

 */



#ifndef ERLCMD_H

#define ERLCMD_H



#include <ei.h>



/*

 * Erlang request/response processing

 */

#define ERLCMD_BUF_SIZE 2048

struct erlcmd {

    char buffer[ERLCMD_BUF_SIZE];

    size_t index;



    void (*request_handler)(const char *emsg, void *cookie);

    void *cookie;

};



void erlcmd_init(struct erlcmd *handler,

                 void (*request_handler)(const char *req, void *cookie),

                 void *cookie);

void erlcmd_send(char *response, size_t len);

void erlcmd_process(struct erlcmd *handler);



#endif